Sony XAV-AX8500 Bluetooth Packet integer overflow

Summaryinfo

A vulnerability classified as critical was found in Sony XAV-AX8500. The affected element is an unknown function of the component Bluetooth Packet Handler. Executing a manipulation can lead to integer overflow. This vulnerability is registered as CVE-2025-5475. The attack requires access to the local network. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Sony XAV-AX8500 (version unknown) and classified as critical. This vulnerability affects an unknown function of the component Bluetooth Packet Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Sony XAV-AX8500 Bluetooth Packet Handling Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected Sony XAV-AX8500 devices. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the handling of Bluetooth packets. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the elysian-bt-service process. Was ZDI-CAN-26283.

The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2025-5475 since 06/02/2025. The exploitation appears to be difficult. The attack needs to approached within the local network. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/08/2025).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-18885). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Sony

Name

• XAV-AX8500

License

• commercial

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion